Does asterisk provide quality of service(QoS)? If it does, how do I use it? The reason why I ask is that I need to switch to use POTS should the internet connection becomes poor? Thanks, Jim
This is a very complex question. First, you have to ask about VoIP and QoS. This is because * uses VoIP protocols like UDP and RTP. In general, the QoS of VoIP is not as high as with the PSTN. Even so, call quality can be generally very good. Second, * does support features that support QoS, for example the IAX jitterbuffer setting. Paul Paul Mahler pmahler@signate.com Signate, LLC 665 Third Street Suite 100 San Francisco, CA 94107-1901 Asterisk Services and Training> Does asterisk provide quality of service(QoS)? If it does, > how do I use it? The reason why I ask is that I need to > switch to use POTS should the internet connection becomes poor? > > Thanks, > Jim > > > _______________________________________________ > Asterisk-Users mailing list > Asterisk-Users@lists.digium.com > http://lists.digium.com/mailman/listinfo/asterisk-users > To UNSUBSCRIBE or update options visit: > http://lists.digium.com/mailman/listinfo/asterisk-users >
> Does asterisk provide quality of service(QoS)? If it does, how do I use > it? The reason why I ask is that I need to switch to use POTS should the > internet connection becomes poor?Asterisk 'participates' in the qos process by allowing you to set TOS bits in the IP header. For example: In sip.conf tos=0x18 ;sets ip tos bits lowdelay & throughput In iax.conf tos=lowdelay However, its up to your infrastructure equipment (eg, routers & switches) to prioritize packets received, and send those on to the next hop following the objectives that you program into those devices. Not all devices support qos however. When using Internet connections, you can control qos for packets leaving your site, however you normally can't control how your ISP (and their providers) handle it (if at all) for incoming packets. Some ISPs are actually doing some qos, but most are not. There is no logic built into asterisk that would support a decision making process of chosing one path verses another based on past quality, etc. Rich